Persons may sit behind a fence.Logical formLearned from16 sentences. A (border fence) can be guarded.Logical formLearned from16 sentences. A fence may save lives.Logical formLearned from16 sentences. A fence may be needed.Logical formLearned from16 sentences. A fence can be open.Logical formLearned from16 sentences. A fence can be with a country.Logical formLearned from16 sentences. A man may scale a fence.Logical formLearned from16 sentences. A fence can be portable.Logical formLearned from16 sentences. A blast can be over a fence.Logical formLearned from16 sentences. A man may scale a fence.Logical formLearned from15 sentences. A person may see fences.Logical formLearned from15 sentences. A fence may pertain-to a school.Logical formLearned from15 sentences. A fence can be effective.Logical formLearned from15 sentences. A fence can be between persons.Logical formLearned from15 sentences. (Park crews) may erect a (chain link fence).Logical formLearned from15 sentences.